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Microstructure Evolution of FeCrNiMn Duplex High Entropy Alloys During High-Temperature Compression
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1.Suzhou Nuclear Power Research Institute, Suzhou 215004, China;2.Xi'an Chao Jing Technology Co., Ltd, Xi'an 710200, China;3.Shaanxi Key Laboratory of Advanced Metal Structural Materials Precision Thermoforming, Xi'an 710200, China

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Natural Science Foundation of Jiangsu Province (BK2018021)

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    Abstract:

    To investigate the microstructure evolution during high-temperature deformation of the duplex high entropy alloys (HEAs), compression tests were performed at temperatures from 900 °C to 1050 °C with different strain rates. Four typical flow curves were selected and the corresponding microstructures were analyzed to investigate the dynamic recrystallization (DRX) and texture evolution of the duplex HEAs. The results show that the flow curves are totally different for samples deformed at the strain rate of 0.1 and 0.01 s-1. The difference of mechanical flow curves is correlated with the DRX and texture evolution process. Two-component textures combining the <110> and <100> components are obtained after compression at 1050 °C and 0.1 s-1. It is attributed to the dominance of diffusion-controlled solute drag at high temperature. Moreover, the effect of bcc phase relies on interphase boundary and strain heterogeneity around these particles, since no phase transformation occurs and most of the strain is accommodated by fcc phase.

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[Mei Jinna, Wu Tiandong, Wei Na, Cai Zhen, Xue Xiangyi. Microstructure Evolution of FeCrNiMn Duplex High Entropy Alloys During High-Temperature Compression[J]. Rare Metal Materials and Engineering,2022,51(12):4496~4501.]
DOI:10.12442/j. issn.1002-185X.20210986

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History
  • Received:November 12,2021
  • Revised:January 03,2023
  • Adopted:December 09,2021
  • Online: January 11,2023
  • Published: December 30,2022